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| DOI：10.13522/j.cnki.ggps.2017.0337 |
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| Responses of Irrigation Uniformity of Two Types of Drip Irrigation Belts to Inlet Pressure and Laying Length |
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XI Qiliang, GE Guofeng, ZHOU Fang, XING Xuexia, ZHAO Ke, WEI Xuanzhi, XUE Gang, YANG Tiezhao
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College of Tobacco Science, Henan Agricultural University, Zhengzhou 450002, China; Luoyang Municipal Tobacco Company in Henan Province, Luoyang 471000, China
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| Abstract: |
| 【Objective】 Investigate the influence of inlet pressure and laying length on the drip irrigation uniformity. 【Method】 The embedded drip irrigation belt and the thin-wall drip irrigation belt were used as the research objects, and the uniformity of drip irrigation under 4 kinds of inlet water pressure and 4 kinds of laying length was compared. 【Result】 The uniformity of drip irrigation of embedded drip irrigation was better than thin-wall drip irrigation, and the embedded drip irrigation was suitable for long distance. The mathematical models of the relationship between the irrigation uniformity and the laying length and the inlet water pressure of the two types of drip irrigation belts were established. The optimal combination of the laying length and the inlet water pressure whose irrigation uniformity was more than 0.95 was found by using the optimization of the regression equation that the laying length of embedded drip irrigation belt was 60.02～109.94 m, and inlet water pressure was 0.09～0.20 MPa; The laying length of thin-wall drip irrigation belt was 60.05～92.67 m, and inlet water pressure was 0.05～0.20 MPa. 【Conclusion】 Therefore, when designing the field drip irrigation system, the laying length and the inlet water pressure of the two types of drip irrigation belts should be selected in the above range to ensure the uniformity of irrigation. |
| Key words: drip irrigation; laying length; inlet pressure; irrigation uniformity |
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